December 17, 2009 Earthquake: Ito, Honshu, Japan
A magnitude 4.9 earthquake struck Ito, Honshu, Japan on December 17, 2009 at 23:45:36 UTC, 7 km below the surface.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- December 17, 2009
- Time
- 23:45:36 UTC
- Place
- Ito, Honshu, Japan
- Magnitude
- 4.9 (mb)
- Focal depth
- 7 km (4 mi)
- Tsunami
- None recorded
- Epicenter
- 34.921° N, 139.261° E
- Country
- Japan
The toll
- Injuries
- 7
- Damage
- Limited (under about $1 million)
- Houses damaged
- 20 with its tsunami and other effects
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
What the record says
NCEI’s account, from the sources it cites.
At least 7 people injured and 20 homes damaged in the Ito area. Felt at Ayase, Fujisawa, Mitaka, Shimoda, Yokohama and
Zushi. Recorded (5L JMA) in Shizuoka; (3 JMA) in
Kanagawa; (2 JMA) in Chiba, Tokyo and Yamanashi; (1
JMA) in Nagano and Saitama. Also recorded (2 JMA) on O-
shima and (1 JMA) on Miyake-jima, Nii-jima, Shikine-
jima and To-shima. (reference #1053)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- September 1, 1923, Tokyo, Yokohama, Japan
- May 27, 1293, Kamakura, Japan
- November 11, 1855, Tokyo, Japan
- December 30, 1703, Off SW Boso Peninsula, Japan
- September 20, 1498, Enshunada Sea, Japan
- January 12, 1945, S, Honshu, Japan
- October 28, 1707, Enshunada, Japan
- February 3, 1605, Enshunada, Japan
- December 23, 1854, Enshunada Sea, Japan
- December 17, 1096, Enshunada, Japan
- November 25, 1930, Idu, Honshu, Japan
- April 9, 1858, N, Hida, Japan
- September 12, 1495, Kamakura, Japan
- July 29, 1649, Tokyo, Japan
- March 1, 1633, Odawara, Japan
More
Significant earthquakes of 2009The 2000sEvery quake the USGS located in 2009Recent earthquakes near hereThis day in weather history
Sources
Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 8795.